KR101245018B1 - Method of fabricating liquid crystal display panel - Google Patents

Abstract

In the manufacturing method of the liquid crystal display panel of the present invention, by forming a protective pattern on the surface of the mother substrate passing through the cutting line to prevent cracks formed on the edge portion of the mother substrate during the scribe process. To provide a first, second mother substrate divided into a plurality of panel area; Performing an array process on the first mother substrate for the array substrate, and performing a color filter process on the second mother substrate for the color filter substrate; Forming an alignment layer on surfaces of the first and second mother substrates; Performing rubbing on the first and second mother substrates on which the alignment layer is formed; Bonding the rubbing finished first and second mother substrates; Forming a protective pattern made of an adhesive material on a surface of the bonded first and second mother substrates in a first direction in which a first cutting line is to be formed and in a second direction in which a second cutting line is to be formed; Forming first and second cut lines to divide the panel region in the first and second directions in the protective pattern along the protective patterns formed on the first and second mother substrates; And separating the mother substrate on which the first and second cutting lines are formed into a plurality of unit liquid crystal display panels.

Cutting line, protection pattern, scribe process, mother board, liquid crystal display panel

Description

Manufacturing method of liquid crystal display panel {METHOD OF FABRICATING LIQUID CRYSTAL DISPLAY PANEL}

1 is an exemplary view showing a schematic plan configuration of a unit liquid crystal display panel in which a thin film transistor array substrate and a color filter substrate are opposed to each other.

FIG. 2 is a schematic cross-sectional view of a liquid crystal display panel formed by combining a first mother substrate on which thin film transistor array substrates are formed and a second mother substrate on which color filter substrates are formed.

3 is an exemplary view schematically showing a cutting process of a general liquid crystal display panel.

4A to 4D are exemplary views sequentially illustrating a cutting process of a liquid crystal display panel according to an exemplary embodiment of the present invention.

5 is a flowchart sequentially illustrating a method of manufacturing a liquid crystal display panel according to the present invention.

6 is a flowchart sequentially showing another manufacturing method of the liquid crystal display panel according to the present invention;

DESCRIPTION OF REFERENCE NUMERALS

103,104: Motherboard 112,113: Wheel

114,115 planned cutting line 160: protective pattern

The present invention relates to a method for manufacturing a liquid crystal display panel, and more particularly, to a method for manufacturing a liquid crystal display panel for cutting a plurality of liquid crystal display panels fabricated on a large area mother substrate into individual unit liquid crystal display panels. .

Recently, interest in information display has increased, and a demand for using portable information media has increased, and a light-weight flat panel display (FPD) that replaces a cathode ray tube (CRT) And research and commercialization are being carried out. Particularly, among such flat panel display devices, a liquid crystal display (LCD) is an apparatus for displaying an image using the optical anisotropy of a liquid crystal, and is excellent in resolution, color display and picture quality and is actively applied to a notebook or a desktop monitor have.

Hereinafter, the liquid crystal display device will be described in detail.

A general liquid crystal display device includes a liquid crystal display panel including a driving circuit unit, a backlight unit disposed under the liquid crystal display panel to emit light to the liquid crystal display panel, and the backlight unit and the liquid crystal display panel. It consists of a mold frame (case) and a case (supporting).

In particular, referring to FIG. 1, the liquid crystal display panel 10 includes an image display unit 13 in which liquid crystal cells are arranged in a matrix, and a gate pad unit connected to the gate lines 16 of the image display unit 13. 14 and a data pad portion 15 connected to the data lines 17.

In this case, the gate pad unit 14 and the data pad unit 15 are formed in an edge region of the thin film transistor array substrate 1 that does not overlap the color filter substrate 2, and the gate pad unit 14 is a gate. The scan signal supplied from the driver (not shown) is supplied to the gate lines 16 of the image display unit 13, and the data pad unit 15 supplies the image information supplied from the data driver (not shown) to the image display unit 13. Is supplied to the data lines 17.

Although not shown in the drawings, the color filter substrate 2 includes a color filter composed of sub-color filters of red (R), green (G), and blue (B) colors for implementing colors. A black matrix separating the sub color filters and blocking light passing through the liquid crystal layer, and a transparent common electrode applying a voltage to the liquid crystal layer. In addition, the array substrate 1 is arranged on the substrate 1 vertically and horizontally and includes a plurality of gate lines 16 and data lines 17 defining a plurality of pixel regions, and the gate lines 16 and data lines ( And a thin film transistor (TFT), which is a switching element formed at an intersection region of the substrate 17, and a pixel electrode formed on the pixel region.

The array substrate 1 and the color filter substrate 2 configured as described above are joined to face each other by the seal pattern 40 formed on the outer side of the image display unit 13 to form a liquid crystal display panel 10. (1) and the color filter substrate 2 are bonded through a bonding key (not shown) formed on the array substrate 1 or the color filter substrate 2.

In general, a liquid crystal display device includes a plurality of liquid crystal displays by forming thin film transistor array substrates on a large area mother substrate, color filter substrates on a separate mother substrate, and then bonding two mother substrates to improve yield. Panels are simultaneously formed, and a process of cutting the liquid crystal display panels into a plurality of unit liquid crystal display panels is required.

In general, the unit liquid crystal display panel is cut by using a wheel having a hardness higher than that of glass, and forming a groove to be cut on the surface of the mother substrate, and causing cracks to propagate along the groove to be cut.

FIG. 2 is a schematic cross-sectional view of a liquid crystal display panel formed by combining a first mother substrate on which thin film transistor array substrates are formed and a second mother substrate on which color filter substrates are formed.

As shown in the drawing, the unit liquid crystal display panels are formed such that one side of the thin film transistor array substrates 1 protrudes relative to the color filter substrates 2. This is because a gate pad portion (not shown) and a data pad portion (not shown) are formed at edges of the thin film transistor array substrates 1 that do not overlap the color filter substrates 2.

Accordingly, the color filter substrates 2 formed on the second mother substrate 30 may have a first dummy region corresponding to an area where the thin film transistor array substrates 1 formed on the first mother substrate 20 protrude. Are spaced apart by (31).

In addition, each of the unit liquid crystal display panels may be appropriately disposed so as to make the best use of the first and second mother substrates 20 and 30, and depending on the model, the unit liquid crystal display panels generally have a second dummy area ( 32) spaced apart.

After the first mother substrate 20 on which the thin film transistor array substrates 1 are formed and the second mother substrate 30 on which the color filter substrates 2 are formed are bonded, the liquid crystal display panels are individually cut. The first dummy region 31 formed in the region where the color filter substrates 2 of the mother substrate 30 are spaced apart from the second dummy region 32 that separates the unit liquid crystal display panels is simultaneously removed.

The cutting process of the liquid crystal display panel as described above will be briefly described as follows.

3 is an exemplary view schematically illustrating a cutting process of a general liquid crystal display panel.

As shown in the drawing, a cutting apparatus of a general liquid crystal display panel includes a table 42, first and second mother substrates 20 and 30 and the first and second mother substrates loaded on the table 42 after the previous process is completed. And a cutting wheel 55 for processing the second mother substrates 20 and 30 to form a cutting schedule line 51 on the surface thereof.

In the cutting device of the liquid crystal display panel, when the opposing bonded first and second mother substrates 20 and 30 including the plurality of liquid crystal display panels are loaded on the table 42, the first and second mother substrates 20 are loaded. , 30) the cutting wheel 55 positioned on the upper side is lowered and rotated while applying a predetermined pressure to the second mother substrate 30 to cut the cut line in the form of a groove on the surface of the second mother substrate 30. To form (51).

The cut line is also formed on the first mother substrate 20. That is, the first mother substrate 20 is processed by the cutting wheel 55 to form a cutting schedule line at the same position as the cutting schedule line 51 of the second mother substrate 30. Therefore, since the first mother substrate 20 and the second mother substrate 30 must be separately processed in the general liquid crystal display panel cutting process, the second mother substrate 30 is cut by the cutting wheel ( 55, the first mother substrate 20 is processed by the cutting wheel 55 while the liquid crystal display panel is inverted to face the first mother substrate 20 upward.

Thereafter, the first and second mother substrates 20 and 30 are separately separated by applying pressure to the cutting schedule line 51 formed on the first mother substrate 20 and the second mother substrate 30. .

In this case, in the process of forming the cutting schedule line 51 on the first mother substrate 20 and the second mother substrate 30, the edge portions of the first mother substrate 20 and the second mother substrate 30 are formed. Fine cracks are generated by the cutting wheel 55. The crack may cause damage to the liquid crystal display panel during the stiffness test of the liquid crystal display panel. That is, as the degree of crack progresses in the stiffness test process of the liquid crystal display panel, a defect in which the liquid crystal display panel is damaged occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method of manufacturing a liquid crystal display panel to reduce cracks formed at an edge portion during cutting of the liquid crystal display panel.

Further objects and features of the present invention will be described in the configuration and claims of the invention to be described later.

In order to achieve the above object, the manufacturing method of the liquid crystal display panel of the present invention comprises the steps of providing a first mother substrate divided into a plurality of panel regions; Performing an array process on the first mother substrate for the array substrate, and performing a color filter process on the second mother substrate for the color filter substrate; Forming an alignment layer on surfaces of the first and second mother substrates; Performing rubbing on the first and second mother substrates on which the alignment layer is formed; Bonding the rubbing finished first and second mother substrates; Forming a protective pattern made of an adhesive material on a surface of the bonded first and second mother substrates in a first direction in which a first cutting line is to be formed and in a second direction in which a second cutting line is to be formed; Forming first and second cut lines to divide the panel region in the first and second directions in the protective pattern along the protective patterns formed on the first and second mother substrates; And separating the mother substrate on which the first and second cutting lines are formed into a plurality of unit liquid crystal display panels.

Hereinafter, exemplary embodiments of a method of manufacturing a liquid crystal display panel according to the present invention will be described in detail with reference to the accompanying drawings.

4A through 4D are exemplary views sequentially illustrating a cutting process of a liquid crystal display panel according to an exemplary embodiment of the present invention.

As shown in FIG. 4A, the first and second mother substrates 103 and 104 having a plurality of panel regions (not shown) bonded to each other are separated into a plurality of unit liquid crystal display panels through a scribing process to be described later. In order to reduce the occurrence of cracks in the process of forming the cutting schedule line, an organic material is formed on predetermined surfaces of the first and second mother substrates 103 and 104 on which the cutting schedule line is formed. Form a protective pattern 160 made of.

In this case, the upper panel region may be an array substrate on which a thin film transistor is formed through an array process, and the lower panel region may be a color filter substrate on which a color filter is formed through a color filter process. The panel regions may be all formed of the same size or at least two different sizes.

The protective pattern 160 may be formed by applying an adhesive made of a polymer organic material such as phenol resin, urea resin, epoxy resin, or the like to a predetermined surface of the first and second mother substrates 103 and 104 on which a cut line is to be formed. Can be.

Subsequently, as shown in FIG. 4B, the first and second mother substrates 103 and 104 on which the protection pattern 160 is formed are loaded onto the first table 105, and then an alignment mark. Align through 106.

In this case, the first and second mother substrates 103 and 104 are loaded by stacking the first mother substrate 103 on which the thin film transistor array substrates are formed on the second mother substrate 104 on which the color filter substrate is formed. On the contrary, the impact applied to the thin film transistor array substrate or the color filter substrate in the cutting process of the first and second mother substrates 103 and 104 can be alleviated as compared with the case of lamination.

As shown in FIG. 4C, the first and second mother substrates 103 and 104 are disposed by a predetermined distance so as to be placed between the first table 105 and the second table 111 that is constantly spaced apart from each other. While moving, the first and second mosquito plates 103 and 104 through the first upper wheel 112 and the first lower wheel 113 in spaced spaces between the first and second tables 105 and 111. The first cut lines 114 and 115 are sequentially formed on the surface of the s).

The first cutting lines 114 and 115 are sequentially formed in the protection pattern 160 along the protection pattern 160 formed in one direction on the surfaces of the first and second mother substrates 103 and 104. The protective pattern 160 may reduce cracks formed at an edge portion of the liquid crystal display panel when the first cutting lines 114 and 115 are formed.

In this case, one side of the thin film transistor array substrate formed on the first mother substrate 103 is formed to protrude relative to the corresponding side of the color filter substrate formed on the second mother substrate 104. This is due to the gate pad part formed on one side of the thin film transistor array substrate and the data pad part formed on one side of the vertical direction.

Therefore, in the region where one side of the thin film transistor array substrate protrudes from the corresponding side of the color filter substrate, the first upper substrate 112 is spaced a predetermined distance apart from the one side of the reference line R1 so that the first mother substrate 103 is separated. A first cutting schedule line 114 is formed on a surface of the upper surface of the upper surface of the upper surface of the upper wheel 112, and the first lower wheel 113 is spaced apart from a reference line R1 in a direction opposite to the first upper wheel 112 by a predetermined distance. 2 The primary cutting schedule line 115 is formed on the surface of the mother substrate 104.

In this case, in the region where the gate pad portion or the data pad portion of the thin film transistor array substrate is not formed (that is, the region where the thin film transistor array substrate does not protrude from the color filter substrate), the first upper wheel 112 and the first lower portion are not formed. The wheels 113 are aligned with each other to form first cutting lines 114 and 115 on the surfaces of the first and second mother substrates 103 and 104, respectively.

As shown in FIG. 4D, the first and second mother substrates 103 and 104 are applied by applying pressure to a portion of the primary cutting schedule lines 114 and 115 through the first roll 116. Are cut sequentially.

The first roll 116 simultaneously applies pressure to one or a plurality of portions of the primary cutting schedule line 114 formed by the first upper wheel 112, thereby providing the first and second mother substrates 103. , The cracks may be propagated along the first cutting lines 114 and 115 formed on the 104. In this case, the crack is formed and propagated along the first cutting lines 114 and 115 to separate the first and second mother substrates 103 and 104 along the first cutting lines 114 and 115. This is different from a crack which damages the liquid crystal display panel by advancing from the edge portion of the liquid crystal display panel to the inside of the liquid crystal display panel.

Although not shown in the drawings, the cut first and second mother substrates 103 and 104 are rotated by 90 °, and then the two first and second mother substrates 103 and 104 are placed on the surface of the first and second mother substrates 103 and 104 in the same manner. The secondary cutting schedule line is formed sequentially. In this case, the second cutting schedule line is formed in the protection pattern 160 along the protection pattern 160 formed in the other direction on the surfaces of the first and second mother substrates 103 and 104.

Thereafter, the first and second mother substrates 103 and 104 are sequentially cut by applying pressure to a portion of the second cutting schedule line through a second roll (not shown).

As described above, the unit liquid crystal display panels sequentially cut along the first and second cutting lines 114 and 115 and the second and second cutting lines are transferred to the equipment to be subjected to the subsequent process.

Hereinafter, a manufacturing method of the liquid crystal display panel using the cutting method of the liquid crystal display panel will be described in detail.

5 is a flowchart sequentially illustrating a method of manufacturing a liquid crystal display panel according to the present invention, and FIG. 6 is a flowchart sequentially illustrating another method of manufacturing a liquid crystal display panel according to the present invention.

5 illustrates a method of manufacturing a liquid crystal display panel when a liquid crystal layer is formed by a liquid crystal injection method, and FIG. 6 illustrates a method of manufacturing a liquid crystal display panel when a liquid crystal layer is formed by a liquid crystal drop method.

The manufacturing process of the liquid crystal display device may be largely divided into a driving element array process of forming a driving element on a lower array substrate, a color filter process of forming a color filter on an upper color filter substrate, and a cell process.

First, a plurality of gate lines and data lines arranged on a lower substrate to define a pixel region are formed by an array process, and thin film transistors, which are driving elements connected to the gate lines and data lines, are formed in each of the pixel regions (S101). ). In addition, a pixel electrode connected to the thin film transistor through the array process and driving the liquid crystal layer as a signal is applied through the thin film transistor is formed.

In addition, the upper substrate is formed with a color filter layer and a common electrode composed of sub-color filters of red, green, and blue that implement color by a color filter process (S103).

Subsequently, after the alignment films are applied to the upper and lower substrates, an alignment control force or surface fixing force (ie, a pretilt angle and an orientation direction) is applied to the liquid crystal molecules of the liquid crystal layer formed between the upper substrate and the lower substrate. In order to provide the alignment layer, the alignment layer is oriented (S102, S104). At this time, the rubbing or photo-alignment method can be applied to the alignment treatment method.

Then, the upper substrate and the lower substrate after the rubbing process are inspected whether the alignment layer is defective through the alignment layer inspector (S105).

The liquid crystal display panel uses the electro-optic effect of the liquid crystal. The electro-optic effect is determined by the anisotropy of the liquid crystal itself and the molecular arrangement state of the liquid crystal. Therefore, the control of the molecular arrangement of the liquid crystal is used to stabilize display quality of the liquid crystal display panel. It will have a big impact.

Therefore, the alignment film forming process for more effectively aligning the liquid crystal molecules is very important in relation to the image quality characteristics in the liquid crystal cell process.

Such a rubbing defect inspection method includes a first inspection for inspecting the presence of spots, streaks or pin holes on the surface of the coated alignment film after the alignment film is applied, and the uniformity and scratch of the surface of the rubbed alignment film after rubbing. There is a secondary test that checks for the presence of a scratch or the like.

As shown in FIG. 6, a spacer for maintaining a constant cell gap is formed on the lower substrate after the alignment layer inspection, and a sealing material is applied to an outer portion of the upper substrate, and then pressure is applied to the lower substrate and the upper substrate. To be attached (S106, S107, S108). In this case, the spacer may be a ball spacer by a scattering method, or may be a column spacer by patterning.

On the other hand, the lower substrate and the upper substrate is composed of a large area mother substrate. In other words, a plurality of panel regions are formed in a large area mother substrate, and a thin film transistor and a color filter layer serving as driving elements are formed in each of the panel regions, so that the mother substrate is cut and processed in order to manufacture a single liquid crystal display panel. Must be (S109).

In this case, in order to separate the mother substrate into a separate liquid crystal display panel, a cutting schedule line is formed on the surface of the mother substrate. As described above, the present invention is directed to a surface of the mother substrate on which the cutting schedule line is to be formed. By forming a protection pattern to reduce cracks in the mother substrate, it is possible to prevent the liquid crystal display panel from being damaged during the stiffness test of the liquid crystal display panel.

Subsequently, as shown in FIG. 5, a liquid crystal is injected into the liquid crystal display panel processed as described above through a liquid crystal inlet, and the liquid crystal inlet is encapsulated to form a liquid crystal layer. It is produced (S110, S111).

At this time, the injection of the liquid crystal uses a vacuum injection method using a pressure difference, the vacuum injection method is a container filled with the liquid crystal in the chamber in which a constant vacuum is set in the liquid crystal injection hole of the unit liquid crystal display panel separated from the mother substrate of a large area The liquid crystal is injected into the liquid crystal display panel by injecting the liquid crystal into the liquid crystal display panel by the pressure difference between the inside and the outside of the liquid crystal display panel. The liquid crystal layer of the liquid crystal display panel is formed. Therefore, when the liquid crystal layer is formed in the liquid crystal display panel through a vacuum injection method, a part of the seal pattern must be opened to have a function of the liquid crystal injection hole.

However, the vacuum injection method as described above has the following problems.

First, it takes a very long time to fill the liquid crystal in the liquid crystal display panel. In general, since the bonded liquid crystal display panel has a gap of several μm in an area of several hundred cm 2, even if a vacuum injection method using a pressure difference is applied, the amount of liquid crystal injection per unit time is very small. For example, when manufacturing a liquid crystal display panel of about 15 inches takes about 8 hours to fill the liquid crystal there is a problem that the production of the liquid crystal display panel takes a lot of time, productivity is lowered. In addition, as the size of the liquid crystal display panel increases in size, the time required for filling the liquid crystal becomes longer, resulting in poor filling of the liquid crystal, and as a result, there is a problem in that it cannot cope with the increase in size of the liquid crystal display panel.

Second, the consumption of liquid crystal is high. In general, the amount of liquid crystal actually injected into the liquid crystal display panel is very small compared to the amount of liquid crystal filled in the container, and when the liquid crystal is exposed to the atmosphere or a specific gas, it reacts with the gas and deteriorates. Therefore, even if the liquid crystal filled in the container is filled in a plurality of liquid crystal display panels, a large amount of liquid crystals remaining after the filling should be discarded. As such, the expensive liquid crystals are discarded, resulting in an increase in the cost of the liquid crystal display panel. It is a factor that weakens the price competitiveness of the product.

The dropping method may be applied to overcome the problems of the vacuum injection method as described above.

As shown in FIG. 6, in the case of using the dropping method, after completing the alignment layer inspection (S105), a predetermined seal pattern is formed on the color filter substrate with a sealant and a liquid crystal layer is formed on the array substrate. (S106 ', S107').

The dropping method uses a dispenser to drop and dispense liquid crystals in an image display area of a first large substrate having a plurality of array substrates or a second mother substrate having a plurality of color filter substrates disposed thereon. The liquid crystal layer is formed by uniformly distributing the liquid crystals to the entire image display area by the pressure for bonding the first and second mother substrates together.

Therefore, when the liquid crystal layer is formed on the liquid crystal display panel by dropping, the seal pattern should be formed in a closed pattern surrounding the pixel portion region to prevent the liquid crystal from leaking outside the image display region.

The dropping method can drop the liquid crystal in a short time compared to the vacuum injection method, and even when the liquid crystal display panel is enlarged, the liquid crystal layer can be formed very quickly.

In addition, since only the required amount of liquid crystal is dropped on the substrate, the price competitiveness of the liquid crystal display panel due to the disposal of expensive liquid crystal, such as a vacuum injection method, is prevented, thereby enhancing the price competitiveness of the product.

Thereafter, the liquid crystal is dropped as described above and the pressure is applied while the upper substrate and the lower substrate on which the sealing material is applied are aligned to bond the lower substrate and the upper substrate by the sealing material, and the liquid crystal dropped by application of pressure at the same time. To spread evenly across the panel (S108 '). By such a process, a plurality of liquid crystal display panels in which a liquid crystal layer is formed are formed on a large area mother substrate (lower substrate and upper substrate), and the glass substrate is processed through the cutting method of the liquid crystal display panel of the present invention. The liquid crystal display panel is manufactured by cutting and separating the liquid crystal display panels into a plurality of liquid crystal display panels and inspecting the respective liquid crystal display panels (S109 'and S110').

Although many details are set forth in the foregoing description, it should be construed as an illustration of preferred embodiments rather than to limit the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

As described above, the manufacturing method of the liquid crystal display panel according to the present invention provides an effect of reducing the occurrence of cracks at the edge portion of the liquid crystal display panel to improve the rigidity of the liquid crystal display panel.

In addition, the manufacturing method of the liquid crystal display panel according to the present invention can reduce the damage of the liquid crystal display panel by the stiffness test by improving the rigidity of the liquid crystal display panel provides an effect of improving the process yield.

Claims (11)

Providing first and second mother substrates divided into a plurality of panel regions; Performing an array process on the first mother substrate for the array substrate, and performing a color filter process on the second mother substrate for the color filter substrate; Forming an alignment layer on surfaces of the first and second mother substrates; Performing rubbing on the first and second mother substrates on which the alignment layer is formed; Bonding the rubbing finished first and second mother substrates; Forming a protective pattern made of an adhesive material on a surface of the bonded first and second mother substrates in a first direction in which a first cutting line is to be formed and in a second direction in which a second cutting line is to be formed; Forming first and second cut lines to divide the panel region in the first and second directions in the protective pattern along the protective patterns formed on the first and second mother substrates; And And separating the mother substrate on which the first and second cutting lines are formed into a plurality of unit liquid crystal display panels. The method of claim 1, wherein the adhesive material is made of a polymer organic material such as phenol resin, urea resin, and epoxy resin. The method of claim 1, wherein the first and the mother substrate on which the protection pattern is formed are moved by a predetermined distance to be placed between the first table and the second table spaced apart from each other. In the spaced space between the first and second tables, a first cutting schedule line is formed in the protection pattern along a protection pattern formed in the first direction on the surfaces of the first and second mother substrates through the upper wheel and the lower wheel. Forming a liquid crystal display panel. The method of claim 3, wherein the first and second mother substrates are sequentially cut by applying pressure to a portion of the first cutting schedule line through a first roll. The method of claim 4, wherein after rotating the cut first and second mother substrate 90 degrees, And forming a second cutting line along the protection pattern formed in the second direction on the surfaces of the first and second mother substrates in the same manner. The method of claim 5, wherein the first and second mother substrates are sequentially cut by applying pressure to a portion of the second cutting schedule line through a second roll. The method of claim 1, wherein a liquid crystal is dropped on the first mother substrate for the rubbed array substrate, and a sealing material is applied to the second mother substrate for the rubbed color filter substrate. . The method of claim 7, wherein the first mother substrate on which the liquid crystal is dropped and the second mother substrate on which the sealing material is applied are bonded together. The method of claim 1, wherein a spacer is distributed on the first mother substrate for the rubbed array substrate, and a sealing material is coated on the second mother substrate for the rubbed color filter substrate. . The method of claim 9, wherein the first mother substrate on which the spacer is formed and the second mother substrate on which the sealing material is applied are bonded together. The method of claim 10, wherein the first and second mother substrates are cut into a plurality of liquid crystal display panels, and then liquid crystal is injected into the liquid crystal display panel.

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